int swap_add(int *p,int *yp)
{

        int x = *xp;
            int y = *yp;
                
                    *xp = y;
                        *yp = x;
                            return x + y;
}

int caller()
{

        int arg1 = 534;
            int arg2 = 1057;
                int sum = swap_add(&arg1,&arg2);
                    int diff = arg1 - arg2;
                    
                        return sum * diff;
}

